Apparatus for molding concrete walls.



T. H. BROWN.

APPARATUS FCR MOLDING CONCRETE WALLS. APPLIGATION FILED Emma, 190s4 1,013,475. Patented Jan. 2, 1912.

lof -Minneapolis,

THEODORE '1 -I. BROWN, OF MINNEAPOLIS, IIINNESOTARASSIGNOR T0 NELS J.

OF' MINNEAPOLIS, MINNESOTA.

sportarten.'

` ArraRA'rUs For. MOLDING CONCRETE WALLS.

Specification of Letters Patent.

Patented Jan. 2, 1912.

Application iled'February 13, 1908. (Serial No. 415,646.

To all whom it may concern: l v Be it known that I, 'IHnononn H. Brown,Hennepin county, M1nnesota,`ha`ve invented certain new and usefulImprovements in Apparatus tor Moldingv Concrete 'Walls, of which thefollowing is a specification.

My invention relates to a molding apparatus for concrete walls of themonolithic type, and the object of the invention is to provide amolding. frame capable of convement and rapidadjustment and b of which asolid wall comprising ace sections with an air space between them, canbe molded in a very compact and rdurable manner.

My invention consists generally in various constructions andcombinations, all as hereinafter described and particularly pointed outvin the claims.

In the accompanying drawings, forming part of this-specification, Figure1 is a perspective view of a wall with my improved molding apparatusthereon. Fig. 2 is a top view of the same. Fig. 3 is a Idetail view ofone of the devices tor locking the sides of the mold together throughthe wall. Figs. 4 and 5 are detail views illustrating the means employedfor locking the side boards and the core plate together.

In the drawing, 2 and 3 representthe side boards or plates'between whichthe wall sections 4 and 5 are formed. 1

'6' is a core plate tapered slightly from the top to the bottom tofacilitate the drawing of the same, and provided with a cross bar 7 tobe grasped by the operator in raising the core plate from one level toanother.

8 represents tiebloclrs having cross ribs 9 thereon 4whereby 'the endsof the blocks will be interlocked and bonded in the concrete. Theseblocks, as indicated, are de signed to bridge the space between thesections 4 and 5.

impervious to moisture bv a coating of suit- -a'ble substance or by soaring them in some The side plates 2 and 3 are held in their properrelative position by ,means or" bars 10 tapered from one end toward theother drawn together and .plates 2 and 3 are means y plate repeateduntil the' desired height of wall has y The blocks may be made of, .anysuitable material and may be rendered The blocks are locatedkting endshave Arecesses 3 to facilitate driving them out of the wall, and havingoppositely turned lugs 1l at one end to bear on the plates 2, and a slotl2 at the other end to receive a locking key I3 by means ot which theside plates are firmly held during the molding operation. The moldhaving been set up with the core plate in place the spaces between thecore plate and the side filled with the concrete mixture of suitableconsistency.

The core plate is provided with a series of recesses tl in its loweredge to receive the tie-blocks 8, said, blocks being placed upon the topof the wall and the core plate inserted between the side boards untilits lower edge rests upon top of the tie-blocks, as indicated in Fig. l.The concreteis then poured into the mold until the spaces between thecore plate and the side boards are iilled. The side plates and the coreplates are then raised as soon as the'corp crete is set sufficiently,and the operation described is repeated.

The tie-bars l0 are used as indicated in I? ig. l, at the joints betweencontiguous side boards, the lugs on one side bearing on the end ot' oneboard and those onthe other side ot the bar bearing on the adjoiningboard. These tie-bars may be lett in the concrete until the substancehas hardened suciently to allow them to be driven out. This operation ofraising the sides of the mold and the core Vand lling the spaces betweenthem, is

been formed.

At the corners the adjoining side boards are preferably secured togetherby angle straps 14. and l5. The core plate is plainly indicated in thisiigure with the bars 7 at intervals to facilitate raising it. rlhe widthof the wall' may be varied by using tie-bars ot ditterent length.. andthe air space between the opposite faces of the wall. may be iii--creased or decreased by using core plates of diiierent thickness. fisthe side plates are raised in the process ot' molding the wall they maybe supported on the ends of the tie-bars beneath, being held in theirrelative position by tbe bars passing 'through the joints .at the endsof the plates. y

he side boards as indicated in Fig. l, are tongued and grooved at 2'.,and their abut.

to receive the tiebars 10. 'Ihe under side oteach cross bar iwall,comprising side plates arranged with the operation of filling the mold.The in Y ter-locking longitudinal edges of the boards will also preventsidewise or lateral movement.

I`elaim as my invention:

1.A An apparatus for molding a monolithic a space between them, theplates on the same side of the wall having their ends abutting oneanother, tie-plates bridging the wall and having their ends extendingthrough the joints of adjoining side plates, said tie-plates havingoppositcly turned lugs at one end to engage said side plates, and slotsand tapered keys therefor at the other end, whereby said plates will belocked in parallel relation with one another, and core plates vtaperedfrom their upper toward their lower edges and suspended between saidside plates,whereby an air space will be formed between the oppositefaces of the wall, when molded, and cross bars interlocking with theupper edges of said side plates and supporting said core platessubstantially as described.

2. An apparatus for molding a'monolithic wall, comprising side platesarranged in parallel relation with one another, tie-bars connecting saidplates, core plates arranged to be suspended between said side platesand spaced therefrom, said side plates and said core plates being movedvertically as the sections of wall are molded, and tie-blocls arrangedto rest upon the wall sections and bridge the space formed by said coreplates, and the lower edges of said core plates have ing lrecessestherein to receive said tieblocks, and each tie-block being embedded inthe wall sections as the successive sections are formed, substantiallyas described.

In witness whereof, I have hereunto set my hand this 31st day of January1908.

THEODORE H. BROWN.

lVinesses:

VR101-IARD PAUL, J. A. BYING'roN.

